Comprehensive PHP Script to verify paypal and Wepay payment using curl

paypalpayment.php

<?

class PaypalController extends Controller
{
    public function validatr($paymentID, $paymentToken, $payerID){
    	  $paypalEnv='sandbox'; // Or 'production'
          if(getenv('client_status')=='production'){
 $paypalURL='https://api.paypal.com/v1/'; // URL of the call
  $paypalClientID=getenv('production_client_id');
     $paypalSecret=getenv('production_client_secret');
}
else{
   $paypalURL='https://api.sandbox.paypal.com/v1/';
    $paypalClientID=getenv('sandbox_client_id');
     $paypalSecret=getenv('sandbox_client_secret');
}
    
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $paypalURL.'oauth2/token');
        curl_setopt($ch, CURLOPT_HEADER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_USERPWD, $paypalClientID.":".$paypalSecret);
        curl_setopt($ch, CURLOPT_POSTFIELDS, "grant_type=client_credentials");
        $response = curl_exec($ch);
        curl_close($ch);
        
        if(empty($response)){
            return false;
        }else{
            $jsonData = json_decode($response);
            $curl = curl_init($paypalURL.'payments/payment/'.$paymentID);
            curl_setopt($curl, CURLOPT_POST, false);
            curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($curl, CURLOPT_HEADER, false);
            curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($curl, CURLOPT_HTTPHEADER, array(
                'Authorization: Bearer ' . $jsonData->access_token,
                'Accept: application/json',
                'Content-Type: application/xml'
            ));
            $response = curl_exec($curl);
            curl_close($curl);
            
            // Transaction data
            $result = json_decode($response);
            
            return $result;
        }
    
    }
}
?>

wepaypayment.php

<?
public function wepayurl (Request $request){
 	  $account_id = getenv('WEPAY_ACCOUNT_ID');
    $client_id = getenv('WEPAY_CLIENT_ID');
    $client_secret = getenv('WEPAY_CLIENT_SECRET');
    $access_token = getenv('WEPAY_ACCESS_TOKEN');
    $amount=0;
     $data = array(
    "account_id" => $account_id,
    "amount" => $amount,
    "short_description"=>"Short Description of Payment",
    "type"=>"service",
    "currency"=>"USD",
    'hosted_checkout' => ['mode' => 'iframe','redirect_uri' => url('')."/payment/redirect"]
    $data = json_encode($data);
if(getenv('WEPAY_CLIENT_STATUS')=='production'){
  $ch = curl_init('https://wepayapi.com/v2/checkout/create'); // URL of the call
}
else{
   $ch = curl_init('https://stage.wepayapi.com/v2/checkout/create'); // URL of the call
}
CURL_SETOPT($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json',"Authorization: Bearer ". $access_token));
curl_setopt($ch, CURLOPT_POSTFIELDS,  $data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1a2pre) Gecko/2008073000 Shredder/3.0a2pre ThunderBrowse/3.2.1.8');
// execute the api call
$result = curl_exec($ch);
if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close ($ch);
);
    }
    ?>